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悠闲数学娱乐论坛(第3版)»论坛 › 数学区› English area
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Law of the unconscious statistician hbghlyj 2023-3-10 1118 hbghlyj 2023-3-10 07:38
classification of finitely generated abelian groups hbghlyj 2023-3-9 2115 hbghlyj 2023-3-9 17:05
range of projection is invariant under a linear operator hbghlyj 2023-3-8 1106 Czhang271828 2023-3-8 15:31
not equivalent to any matrix in Smith normal form hbghlyj 2023-3-4 5126 hbghlyj 2023-3-6 21:06
two isomorphic $C(ℝ)$-modules whose presentation matrices are not equivalent hbghlyj 2023-3-4 11164 hbghlyj 2023-3-6 18:48
$|A·A|$ for $A$ a subset of abelian group $G$ not contained in any proper coset hbghlyj 2023-3-4 0103 hbghlyj 2023-3-4 08:29
continuous functions that have a root 0 hbghlyj 2023-3-1 1113 Czhang271828 2023-3-2 13:17
generalization of Cramer's rule ? hbghlyj 2023-3-2 090 hbghlyj 2023-3-2 09:23
⟨2,X⟩≇⨁cyclic modules hbghlyj 2023-2-21 3114 hbghlyj 2023-2-27 01:02
finitely generated $ℤ$-module hbghlyj 2023-2-26 2125 Czhang271828 2023-2-26 21:13
factor a linear map $R^m→M$ to linear maps $R^m→R^n$ and $R^n→M$ hbghlyj 2023-2-26 1159 Czhang271828 2023-2-26 17:02
the ℤ-module ℚ has no minimal generating set hbghlyj 2023-2-26 193 hbghlyj 2023-2-26 06:56
[Lebesgue integral] Change of variable hbghlyj 2023-2-24 299 hbghlyj 2023-2-24 08:55
Why this determinant is nonnegative orzweb111 2019-3-27 1728 hbghlyj 2023-2-19 18:58
intersection of two compact subsets in a space may be non-compact and not closed hbghlyj 2023-1-30 4149 Czhang271828 2023-2-17 15:19
integral domain with the ACCP in which every maximal ideal is principal hbghlyj 2023-2-11 0109 hbghlyj 2023-2-11 23:43
Is the quotient group $ℝ/ℚ$ the additive group of a ring hbghlyj 2023-1-24 1110 Czhang271828 2023-2-11 20:16
Legendre’s equation and the Fredholm Alternative hbghlyj 2023-2-9 299 hbghlyj 2023-2-10 21:37
not every ideal in $\barℤ$ is finitely generated. hbghlyj 2023-2-8 0133 hbghlyj 2023-2-8 06:51
Real canonical form hbghlyj 2022-11-12 4137 hbghlyj 2023-1-13 05:22
Prove a function defined by integral is holomorphic hbghlyj 2023-1-12 3101 hbghlyj 2023-1-12 22:02
关于Lagrange插值 和 LU,QR 分解 的12道题 hbghlyj 2023-1-10 0100 hbghlyj 2023-1-10 22:39
minimal polynomial splits⇒diagonalisable hbghlyj 2023-1-8 194 hbghlyj 2023-1-8 23:02
[函数] 正交多项式列,满足$f_{n-1}$的根穿插于$f_n$的根 hbghlyj 2022-9-16 4151 hbghlyj 2023-1-6 06:46
complex linearity of the Jacobian hbghlyj 2023-1-1 0105 hbghlyj 2023-1-1 05:09
Riemann's removable singularity theorem hbghlyj 2022-9-13 1119 hbghlyj 2022-12-31 05:06
A connected open subset of a normed space is polygonally connected. hbghlyj 2022-12-29 0102 hbghlyj 2022-12-29 23:56
nested closed sets, lim diam≠0, can intersection be singleton? hbghlyj 2022-12-15 2138 hbghlyj 2022-12-28 21:41
counting zeros (Rouché's theorem) hbghlyj 2022-11-20 1105 hbghlyj 2022-12-28 21:28
[函数] Example of a set that is closed and bounded but not compact hbghlyj 2022-8-2 8223 hbghlyj 2022-12-23 04:35
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